<?php
	$s = ' sträng';
	print('enkelfnuttar $s');
	print("dubbelfnuttad $s");
	
	$test = 3;
	if(is_int($test)) {
		$test *= 3.5;
	}
	
	echo "<br />$test";
	
	if(is_numeric($test)) {
		$test *= 1.25;
	}
	
	echo "<br />$test";
	
	if (is_string($test)) {
		$test .= "Hej då!";
	}
	
	echo "<br />$test";
	
	echo "<br />".gettype($test);
	
	unset($test);
	
	if(isset($test)) {
		echo "<br />$test";
	} else {
		echo "<br />test is not set";
	}
?>